Phosphosulfonic acid, an efficient solid acid catalyst for the one-pot preparation of 14-aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydro-xanthenes under solvent-free conditi...

by Kiasat Reza Ali, Mouradzadegun Arash, Saghanezhad Jafar Seyyed
Published 2013-01-01